Delegate Access Violation in Custom Slate Widget

Development Programming & Scripting UI
, , , , ,
1

Im trying to declare a delegate to pass it to a SplitterSlot OnSlorResize()
so i have declared the delegate as follow on the RA_SDetailBlock.h file:

DECLARE_DELEGATE_OneParam(RowOnLeftSlotResize, float)
RowOnLeftSlotResize LeftSlotResize;

and this is the .cpp file :

void RA_SDetailBlock::Construct(const FArguments & args)
{
	RA_SDetailBlock::RowOnLeftSlotResize::CreateSP(this, &RA_SDetailBlock::OnLeftColumnResized); // ACCESS VIOLATION ERROR DELEGATE
	SAssignNew(verticalBox, SVerticalBox)
		+SVerticalBox::Slot()
		.AutoHeight()
		.VAlign(VAlign_Top)[args._Content.Widget];
	for (auto child : args.Slots) {
		FSlot& nSlot = *new FSlot();
		addSlotToBlock(&nSlot[child->GetCurrSlot()]);
	}
	ChildSlot
		[
			verticalBox.ToSharedRef()
		];
}

void RA_SDetailBlock::addSlotToBlock(RA_SDetailBlock::FSlot* FSlot)
{
	Slots.Add(FSlot);
	FSlot->GetCurrSlot()->LeftSplitterSlot->OnSlotResized(LeftSlotResize);
	verticalBox->AddSlot()
		.AutoHeight()
		.VAlign(VAlign_Top)[FSlot->GetCurrSlot()];
}

void RA_SDetailBlock::OnLeftColumnResized(float InNewWidth)
{
	float t = InNewWidth;
}

i’m trying to figure out how to use delegates and how they works but i think i may not have fully understood how to properly use or declare them

2

nevermind i’ve found the error and it was because not all the child widget that i’m adding have a splitter … so i just did this and it worked like a sharm:

if(FSlot->GetCurrSlot()->hasSplitter()) // check if the slot actually has a Splitter
	FSlot->GetCurrSlot()->LeftSplitterSlot->OnSlotResized(LeftSlotResize);